P0410
Fix within 1-2 weeksSecondary Air Injection System Malfunction
Code P0410 means your Secondary Air Injection System has a malfunction. Common causes: AIR pump failure (50%), check valves (25%), relay (10%). Drivability: Yes, safe to drive. Repair cost: $100-$300 DIY, $250-$600 professional.
Can I Drive With P0410?
Yes, safe to drive
No restrictions
Stop driving immediately if: Flashing CEL (indicates misfire, not typical for P0410), loud noises from the engine bay, burning smell.
Symptoms of P0410
- 1Check Engine Light is on
- 2Rough idle on cold start (less common)
- 3Engine may run rich during cold start
- 4No noticeable symptoms other than the light
Common Causes of P0410
Parts most likely causing this code, ranked by probability
The electric pump motor seizes or fails internally, preventing it from pushing air into the exhaust.
50% of P0410 cases are fixed by replacing the AIR pump
These valves prevent exhaust gases and moisture from entering the pump; if they stick open, exhaust damages the pump, or if stuck closed, air cannot flow.
25% of P0410 cases are fixed by replacing the check valve(s)
A faulty relay prevents power from reaching the AIR pump, so it never turns on.
10% of P0410 cases are fixed by replacing the AIR pump relay
The diverter valve directs air to the exhaust, and if it or its controlling VSV sticks, air flow is blocked or misdirected.
10% of P0410 cases are fixed by replacing the diverter valve or VSV
Cracked hoses cause air leaks, or damaged wiring prevents the pump or valves from operating correctly.
5% of P0410 cases are fixed by repairing hoses or wiring
Check These First (Before Buying Parts)
- Listen for the AIR pump to run for about 30-90 seconds immediately after a cold start.
- Check the AIR pump fuse in your vehicle's fuse box.
- Locate and test the AIR pump relay by swapping it with a known good relay or testing with a multimeter.
How to Diagnose P0410
- 1Start the engine cold and listen for the AIR pump to run for about 30-90 seconds.
- 2Check the fuse for the AIR pump in your vehicle's fuse box.
- 3Locate and test the AIR pump relay by swapping it with a known good relay (e.g., horn relay) or testing with a multimeter.
- 4Inspect all hoses connected to the AIR pump and diverter valve for cracks, disconnections, or blockages.
- 5Disconnect the electrical connector to the AIR pump and apply 12V directly to test if the pump motor runs.
- 6Remove and inspect the check valve(s) for proper operation (should allow air in one direction only).
- 7Test the diverter valve and its vacuum switching valve (if applicable) for proper operation using a vacuum pump.
P0410 on Popular Vehicles
Chevrolet Silverado
2007-2024P0410 is a very common code on these trucks. The AIR pump frequently fails due to water intrusion or internal motor seizure. It is critical to inspect the check valves when replacing the pump, as failed check valves often cause the pump to fail prematurely.
70% fixed by replacing the AIR pump and/or check valves
Toyota Camry
2007-2024While less common than on GM vehicles, P0410 on a Camry often indicates a failed AIR pump or a stuck check valve. Diagnosis should focus on pump operation and valve integrity.
65% fixed by replacing the AIR pump and/or check valves
Honda Accord
2003-2024P0410 on Honda Accord models can be caused by a faulty AIR pump, but also frequently by a failed AIR pump relay or a vacuum switching valve that controls the diverter valve. Electrical checks are important here.
60% fixed by replacing the AIR pump, relay, or VSV
Frequently Asked Questions
What does P0410 mean?
P0410 indicates a malfunction in your vehicle's Secondary Air Injection (AIR) System. This system pumps fresh air into the exhaust during cold starts to help the catalytic converter warm up faster and reduce emissions.
Can I drive with P0410?
Yes, you can drive safely with a P0410 code. The vehicle's drivability is not directly affected, but your emissions will be higher during cold starts. Fix this within 1-2 weeks to prevent potential long-term issues and ensure your vehicle passes emissions testing.
Will P0410 clear itself?
No, P0410 will not clear itself. The Check Engine Light will remain on until the underlying issue with the secondary air injection system is diagnosed and repaired, and the code is cleared with a scan tool.
How do I fix P0410 myself?
Start by checking the AIR pump fuse and relay. If those are good, listen for the pump on a cold start. If it doesn't run, test the pump directly. If the pump runs, inspect the check valves and diverter valve for proper operation. Replacing a faulty relay, check valve, or the AIR pump itself are common DIY fixes.
How much does it cost to fix P0410?
The cost to fix P0410 varies significantly depending on the faulty component. DIY costs range from $15 for a relay to $400 for a new AIR pump. Professional repair costs typically range from $100 for a relay replacement to $800 for an AIR pump replacement, including diagnosis and labor.
P0410 keeps coming back - why?
P0410 keeps coming back because the root cause was not fully addressed. This often happens if only one component was replaced when another was also faulty (e.g., replacing the pump without checking failed check valves that caused the pump to fail). Thorough diagnosis of all system components is crucial.
Will P0410 fail emissions/smog test?
Yes, P0410 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on for any emissions-related code is an automatic failure in most jurisdictions.
What's the difference between P0410 and P0411?
P0410 indicates a general malfunction in the Secondary Air Injection System, meaning the system is not working at all or has a major fault. P0411 specifically indicates 'Incorrect Flow Detected,' meaning the system is attempting to operate but the computer isn't seeing the expected air flow.
P0410 on Chevy Silverado?
On Chevy Silverado and other GM trucks, P0410 is very common and often points to a failed Secondary Air Injection pump. These pumps are known to fail due to water intrusion or the motor seizing. Always check the check valves as well, as their failure can lead to pump damage.
Questions to Ask Your Mechanic
Did you check the AIR pump fuse and relay before condemning the pump?
Good answer: Yes, I confirmed power is reaching the relay and the relay is switching correctly. The fuse is also good.
What did you find when you tested the AIR pump check valves?
Good answer: I found that the check valve was stuck open, allowing exhaust to back up into the pump, which likely caused its failure.
Did you test the AIR pump directly with 12V to confirm it's not running?
Good answer: Yes, I applied direct power to the pump, and it did not activate, confirming an internal pump failure.
Repair Cost Estimate
DIY Repair
Parts only
$15-$400
Shop Repair
Parts + labor
$100-$800
Save $85-$400 by doing it yourself
Difficulty
intermediate
Time
1-3 hours
Intermediate - requires some electrical testing and component access, but most parts are bolt-on replacements.
Cost of Waiting
Ignoring P0410 means your vehicle's emissions are higher during cold starts, contributing to air pollution. It will also cause your vehicle to fail any required emissions or smog tests. While it doesn't typically cause immediate engine damage, a failed check valve can allow moisture into the AIR pump, leading to its premature failure and a more expensive repair.
While You're In There...
These valves often fail and can cause the AIR pump to fail prematurely by allowing exhaust gases and moisture into the pump. It makes sense to inspect or replace them when working on the pump.
Hoses can become brittle and crack over time, leading to leaks. Inspecting and replacing any damaged hoses while accessing the AIR system components prevents future leaks and ensures proper system function.
Tools You'll Need
- Basic hand tools (sockets, wrenches)
- Multimeter
- Scan tool (to clear code)
- Vacuum pump (for testing valves - optional but helpful)
P0410 is a common emissions code. Most repairs are straightforward, and your vehicle will pass emissions tests once the system is fixed.
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Your Next Steps
Step 1: Perform the cold start listening test and check the fuse and relay. If the pump doesn't run and the fuse/relay are good, proceed to test the pump directly.
Step 2: If the pump runs, or if replacing the pump doesn't fix the code, remove and inspect the check valve(s) and test the diverter valve and its vacuum switching valve.
Step 3: Parts you'll likely need: AIR pump, AIR pump relay, or AIR pump check valve(s). You may also need new hoses or gaskets.